| Namn | Licens | Födelseår | Far | Mor | Morfar |
|---|---|---|---|---|---|
| Opium | 2157 | 1980 | Optimist | Trollmor | Jovial |
| Opium | 202075 | 1994 | Opius | Aljett | Jaguar |
| Opium | 220265 | 1996 | Boreas | Hegrid | Vasco |
| Opium | 221491 | 1996 | Rebel Z | Alpha | Gibraltar |
| Opium | 254973 | 2003 | Wetano | Helxine | Herkules |
| Opium Court | 7147 | 1983 | Lane Court xx | Opium Drayane | Optimist |
| Opium Drayane | 1976 | Optimist | Volga | ||
| Opium IV | 240330 | 1996 | Burggraaf | Kirsinaa | Nimmerdor |
| Opius | 22010 | 1988 | Stanford | Corina | Caracas |
| Oporto | 12286 | 1983 | |||
| Oportos Orkan | 1972 | Portos | Orkan | ||
| Oportuno | 229910 | 1995 | Devorante | Brasa | Onjito |
| Opperdoes | 216195 | 1996 | Inspekteur | Coket | Valckmar |
| Opponent | 6880 | 1978 | Karlsdal | Furie | Polarstern |
| Opportunity Nox | 222758 | 1998 | Time of Flight | Firm Decision | Fast Frigate xx |
| Oprah | 202070 | 1997 | Corrado WL | Ofelia (8) | Furidant |
| Oprah | 232521 | 2002 | Oldtimer | Amelia | Amiral |
| Opstalans Chanell | 216152 | 1990 | Charmeur | ||
| Opstalans Flesche Rouge | 215185 | 1993 | Papillon Rouge | Utopie Rouge II | Kissovo |
| Opstalans Medline | 215186 | 1989 | Fleuri du Manoir | Wetteifernde | |
| Opstalans Roofs | 1990 | Caletto I | Lisene | ||
| Opstinat | 1972 | Optimist | The Rose | ||
| Optana | 256490 | 2004 | Calando V | Operette | Logan |
| Optic | 987225 | 1993 | Opius | Celtana | Ceylon |
| Optic VT | 246895 | 2005 | Orlando | Costa Rica H | Carthago |
| Optica | 1886 | 1975 | Optimist | Sarina | Corso |
| Optica | 76596 | 1975 | Optimist | Dione | Dietmar |
| Optica | 44918 | 1982 | Optimist | Odessa | Hostrup |
| Optico | 13752 | 1985 | Orust | Utimona | Utrillo |
| Optico | 248691 | 1996 | Ids | Ieneke | Daimler |